Preparation of Au-Bi2O3 Nanocomposite by Anodic Electrodeposition Combined with Galvanic Replacement

被引：18

作者：

Lee, Changhyun ^{[1
]}

Jeong, Seonghan ^{[1
]}

Myung, Noseung ^{[1
]}

Rajeshwar, Krishnan ^{[2
]}

机构：

[1] Konkuk Univ, Dept Appl Chem, Chungju 380701, Chungbuk, South Korea

[2] Univ Texas Arlington, Dept Chem & Biochem, Arlington, TX 76109 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 10期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

PHOTOCATALYTIC ACTIVITY; OXIDE-FILMS; COMPOSITE; BI2O3; BISMUTH; GROWTH; NANOSTRUCTURES; VOLTAMMETRY; NUCLEATION; WATER;

D O I：

10.1149/2.0421410jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanocomposite films of Au-modified bismuth oxide (Au-Bi2O3) were synthesized via anodic electrodeposition of Bi combined with a galvanic replacement reaction. First, Bi2O3 was prepared by the anodic oxidation of pre-electrodeposited Bi films in 0.1 M NaOH electrolyte. The amount of metallic bismuth in Bi2O3 was tuned by controlling the oxidation time or deposition potential. Thus-prepared Bi-Bi2O3 composite was converted to Au-Bi2O3 by galvanically replacing metallic Bi with Au from an aqueous HAuCl4 solution. The photocatalytic activity of the Au-Bi2O3 nanocomposite for decomposition of methyl orange dye was superior to that of the bare Bi2O3 counterpart under UV as well as visible light illumination. The Author(s) 2014. Published by ECS. All rights reserved.

引用

页码：D499 / D503

页数：5

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